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首页> 外文期刊>Road materials and pavement design >The use of diffuse reflectance infrared spectroscopy to monitor the oxidation of UV irradiated and naturally aged bitumen and asphalt
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The use of diffuse reflectance infrared spectroscopy to monitor the oxidation of UV irradiated and naturally aged bitumen and asphalt

机译：弥漫反射红外光谱的用途监测紫外线辐照和天然老化沥青和沥青的氧化

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Between 2013 and 2014 it cost 4.2 pound billion to repair roads in England [Department for Transport, Statistical Release. (2014). Road conditions in England 2014. Retrieved from ]. Currently, road surface quality is monitored visually and repairs effected when visible damage arises. At this point, repair is unfeasible and costly and time-consuming resurfacing is required. Hence the ability to perform non-invasive monitoring and prediction of road surface degradation could provide a significant advance in highway maintenance. The oxidation of bitumen in road surfaces is known to promote failure of road surfaces as it reduces the cohesion between bitumen and aggregate. This paper reports the use of non-contact, diffuse reflectance infrared Fourier transfer (DRIFT) spectroscopy to monitor the oxidation process in bitumen and asphalt. We outline the comparison between natural and enhanced, artificially promoted ageing of bitumen and asphalt samples using UV light. The IR spectroscopic results show the evolution of oxidation product functional groups and allow the ageing of the samples to be monitored. After 4 weeks of UV ageing and a total exposure of 350 the area of the carbonyl feature had increased from 0.17 to 3.25 and the combined carboxylic & sulphoxide feature had increased from 0.93 to 8.97, while the C-H feature had decreased from 8.16 to 1.18, indicating an increase in the oxidation of the bitumen.
机译：2013年至2014年间，在英格兰修复道路上的4.2磅亿亿亿亿亿亿亿亿亿亿亿亿亿亿亿亿吨。 （2014）。英国的道路状况2014年。从]中检索。目前，可视地监测道路表面质量并在出现可见损坏时进行修理。此时，修复是不可行的，并且需要昂贵且耗时的勘探。因此，执行非侵入性监测和路面劣化预测的能力可以在公路维护中提供显着的进步。已知道路表面中沥青的氧化以促进道路表面的失效，因为它减少了沥青和聚集体之间的内聚力。本文报道了使用非接触，漫反射率红外傅里叶转移（漂移）光谱来监测沥青和沥青中的氧化过程。我们概述了使用紫外光的自然和增强，人工促进的沥青和沥青样品衰老的比较。 IR光谱结果显示氧化产物官能团的演变并允许调龄样品进行监测。在紫外线老化4周后，总暴露350羰基特征的面积从0.17增加到3.25，并且组合的羧基和硫氧化物特征从0.93增加到8.97，而CH功能从8.16降至1.18，表明沥青氧化的增加。

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